Water Pump
Moderators: Redneck_Randy, badmoonrising, lakerunner
- Capt Sully
- Posts: 2098
- Joined: Fri Aug 03, 2012 6:41 pm
- Location: Kennesaw, Ga.
Water Pump
Anyone have a Yamaha 90 and has replaced the Water Pump or the Impeller ? Is this something you can do yourself, and where on the motor are they ?
When I connect the water hose mount to the lower intake the water does not flow out, but when I connect to the flush out connection the water flows. The motor has been sitting for a while. I'm thinking it's the impeller rubber fins dried out and broken ?
Thanks,
When I connect the water hose mount to the lower intake the water does not flow out, but when I connect to the flush out connection the water flows. The motor has been sitting for a while. I'm thinking it's the impeller rubber fins dried out and broken ?
Thanks,
2012 Xcurison X23C
Yamaha 90 hp 4 stroke
Dual axle full bunk trailer ready to go
All pulled with Z71 4WD Silverado
Maritime mobile KD4LZL
Lake Allatoona, NW Ga.
FVC USCG Auxiliary
Vietnam 66 / 67
Yamaha 90 hp 4 stroke
Dual axle full bunk trailer ready to go
All pulled with Z71 4WD Silverado
Maritime mobile KD4LZL
Lake Allatoona, NW Ga.
FVC USCG Auxiliary
Vietnam 66 / 67
Re: Water Pump
Water pump impeller replacement is a regular maintenance type thing because they do indeed wear out/dry out. I have a 115 HP Yamaha and it is not hard to do, but it does require pulling the lower unit off. I proceeded after watching some YouTube videos and found it to be simple enough.
Big and ugly but we love our 1999/2000 Crest II DL with a Yamaha F115
- curtiscapk
- Posts: 5401
- Joined: Mon Nov 10, 2008 8:31 am
- Location: OP KS\Hillsdale Lake
Re: Water Pump
It's pretty simple. Are you sure your pee-hole isn't clogged? I use weedeater string to clear mine out....
Craig and Paula
"THE FLOATER" rebuild Spring 2013
viewtopic.php?f=2&t=15328
94 Party Barge 24' 115 merc
Turning Point hustler 14 x 13 prop
22mph gps 3 people
12 F150
Overland Park Ks
Hillsdale Lake, KS
"THE FLOATER" rebuild Spring 2013
viewtopic.php?f=2&t=15328
94 Party Barge 24' 115 merc
Turning Point hustler 14 x 13 prop
22mph gps 3 people
12 F150
Overland Park Ks
Hillsdale Lake, KS
- FLOUNDERPOUNDER225
- Posts: 314
- Joined: Thu Jul 16, 2015 7:19 am
Re: Water Pump
First, let me tell you Yamaha's do not like flushing from the muffs that attach to the lower unit intake. My past 3 yamahas 225, 250 and current 150 all pee very little or not all from the indicator when running on muffs. this does not mean your impeller is worn, I just replaced mine in April first replacement since new in Aug 2015, still doesn't like to pee except when flushing through the flushing attachment on the engine (donkey dick). now there are articles all over the boating forums on the internet, whether you can run your engine on the flushing port, MFG says do not, not enough water flow, however my 225 2 stroke was never flushed on anything but that donkey dick and never had an issue. My 150 actually sounded the over temp horn once while on the muffs, now I simply flush using salt away and the donkey dick, engine off. If you are going to use flushing muffs, you must get the dual feed style like the picture, single side won't provide enough water. that all being said, if you have been setting up for a long time replacing the water pump is a good idea. the real test is how well does it pee in the water.
Pensacola FL
2015 Berkshire 231 RFC
Yamaha F-150
2015 Berkshire 231 RFC
Yamaha F-150
Re: Water Pump
"Donkey dick"
What was your MOS ?
Only .gov folks get that leaky ass reference
What was your MOS ?
Only .gov folks get that leaky ass reference
Check out "Dudes" site www.whereisdude.com
Re: Water Pump
My same reaction!
Paul & Michele
2003 Landau DX 24' Cruise "Loretta Jane"
2003 Mercury 75hp
My Rebuild: http://pontoonforums.com/viewtopic.php?f=16&t=26135
"Don't waste brain cells over something you can do nothing about." --My Wife
2003 Landau DX 24' Cruise "Loretta Jane"
2003 Mercury 75hp
My Rebuild: http://pontoonforums.com/viewtopic.php?f=16&t=26135
"Don't waste brain cells over something you can do nothing about." --My Wife
- FLOUNDERPOUNDER225
- Posts: 314
- Joined: Thu Jul 16, 2015 7:19 am
Re: Water Pump
Navy Aviation Support Equipment (AS) AGE in the AF world. No Air Support Without Ground Support (NASWOGS)
Pensacola FL
2015 Berkshire 231 RFC
Yamaha F-150
2015 Berkshire 231 RFC
Yamaha F-150
Re: Water Pump
Only a $28 part. Kits are seldom required if you are careful with gaskets. Pay attention to the direction the impeller veins were turned so the new one can be put back the same direction.
Bolts to remove the lower unit are easy to find--except for that one bolt under the bottom of the steering tab on the anticavitation plate. A hex wrench is required to remove the tab.
Go ahead and change the lower unit grease--draining it into a clean pan. f any sign of water intrusion, have the l/u pressure and vacuum tested.
Bolts to remove the lower unit are easy to find--except for that one bolt under the bottom of the steering tab on the anticavitation plate. A hex wrench is required to remove the tab.
Go ahead and change the lower unit grease--draining it into a clean pan. f any sign of water intrusion, have the l/u pressure and vacuum tested.
'12 Bennington 24' SSLX Yamaha 150